From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Amirouche Boubekki Newsgroups: gmane.lisp.guile.user Subject: Re: [ANN] hyper search engine 0.2 Date: Sun, 19 Jun 2016 20:55:08 +0200 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1466362554 26518 80.91.229.3 (19 Jun 2016 18:55:54 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 19 Jun 2016 18:55:54 +0000 (UTC) Cc: guile-user To: Guile User Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Sun Jun 19 20:55:44 2016 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bEhsk-0002c0-MU for guile-user@m.gmane.org; Sun, 19 Jun 2016 20:55:42 +0200 Original-Received: from localhost ([::1]:39765 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bEhsk-0007nk-0a for guile-user@m.gmane.org; Sun, 19 Jun 2016 14:55:42 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48054) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bEhsN-0007lg-Bh for guile-user@gnu.org; Sun, 19 Jun 2016 14:55:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bEhsL-0002q6-GI for guile-user@gnu.org; Sun, 19 Jun 2016 14:55:18 -0400 Original-Received: from relay5-d.mail.gandi.net ([2001:4b98:c:538::197]:35115) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bEhsG-0002ph-2G; Sun, 19 Jun 2016 14:55:12 -0400 Original-Received: from mfilter17-d.gandi.net (mfilter17-d.gandi.net [217.70.178.145]) by relay5-d.mail.gandi.net (Postfix) with ESMTP id C3B5241C080; Sun, 19 Jun 2016 20:55:10 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mfilter17-d.gandi.net Original-Received: from relay5-d.mail.gandi.net ([IPv6:::ffff:217.70.183.197]) by mfilter17-d.gandi.net (mfilter17-d.gandi.net [::ffff:10.0.15.180]) (amavisd-new, port 10024) with ESMTP id KDB-3MP5PcUS; Sun, 19 Jun 2016 20:55:09 +0200 (CEST) X-Originating-IP: 10.58.1.145 Original-Received: from webmail.gandi.net (webmail5-d.mgt.gandi.net [10.58.1.145]) (Authenticated sender: amirouche@hypermove.net) by relay5-d.mail.gandi.net (Postfix) with ESMTPA id 41C8041C089; Sun, 19 Jun 2016 20:55:09 +0200 (CEST) In-Reply-To: X-Sender: amirouche@hypermove.net User-Agent: Roundcube Webmail/1.1.2 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4b98:c:538::197 X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Original-Sender: "guile-user" Xref: news.gmane.org gmane.lisp.guile.user:12654 Archived-At: On 2016-06-19 11:49, Amirouche Boubekki wrote: > > ``` > (define* ((xor* a b) uid) > (if (procedure? a) > (if (procedure? b) > ((xor* (a uid) (b uid)) uid) > ((xor* (a uid) b) uid)) > (if (procedure? b) > ((xor* a (b uid)) uid) > (xor a b)))) > ``` > That procedure is buggy, since we can assume that (a uid) returns a boolean, there is no need for the extra xor* call. The following does what is expected thanks to ijp: > (define ((xor* . fs) uid) > (fold logxor 0 (map (lambda (f) (if (procedure? f) (f uid) f)) fs))) -- Amirouche ~ amz3 ~ http://www.hyperdev.fr